Deep beneath the crushing waves, a once-cutting-edge research facility now lies in ruins—its flooded corridors teeming with malfunctioning machines, crumbling passages, and ravenous, bioengineered sea creatures. You play as Rill, a fierce and resourceful otter driven by vengeance and the desperate will to survive, darting through labyrinthine, procedurally generated halls rendered in evocative 16-bit pixel art. Air is precious, the environment is unstable, and every looming shadow hides a threat or a clue to the broken past. Rill must leverage physical agility, sharp instincts, and tactical cunning to outmaneuver deadly hazards and uncover ever-shifting secrets of the maze. Each dive into the depths rewrites the path and reshapes the test—survival demands both bold choices and adaptability with every breath.